42242220424445 has 8 divisors (see below), whose sum is σ = 50691640748760. Its totient is φ = 33793125513280.

The previous prime is 42242220424381. The next prime is 42242220424447. The reversal of 42242220424445 is 54442402224224.

It can be written as a sum of positive squares in 4 ways, for example, as 67963447204 + 42174256977241 = 260698^2 + 6494171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42242220424445 - 2⁶ = 42242220424381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242220424447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81067610 + ... + 81587019.

It is an arithmetic number, because the mean of its divisors is an integer number (6336455093595).

Almost surely, 2^{42242220424445} is an apocalyptic number.

It is an amenable number.

42242220424445 is a deficient number, since it is larger than the sum of its proper divisors (8449420324315).

42242220424445 is a wasteful number, since it uses less digits than its factorization.

42242220424445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162706575.

The product of its (nonzero) digits is 1310720, while the sum is 41.

Adding to 42242220424445 its reverse (54442402224224), we get a palindrome (96684622648669).

The spelling of 42242220424445 in words is "forty-two trillion, two hundred forty-two billion, two hundred twenty million, four hundred twenty-four thousand, four hundred forty-five".